ste100

ste100 is a skill for Claude Code, Codex from idjohnson/aiskills. It costs 65 tokens per session (1,868 once invoked), scanned A, original, MIT.

A writing skill based on ASD-STE100 Simplified Technical English, a standard for clear and controlled technical documentation.

In plain words
What is it for?
Use it to write or check manuals, procedures, warnings, and other technical documentation against the standard.
Why use it?
It limits vocabulary, sentence structure, and grammar choices to make technical text easier to understand and translate.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/idjohnson/aiskills/ste100
Any agent
npx skills add idjohnson/aiskills --skill ste100
Clone the repo
git clone --depth 1 https://github.com/idjohnson/aiskills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ste100

README.md
[![agentmods](https://agentmods.dev/badge/skills/idjohnson/aiskills/ste100.svg)](https://agentmods.dev/skills/idjohnson/aiskills/ste100)
Your own site
<a href="https://agentmods.dev/skills/idjohnson/aiskills/ste100"><img src="https://agentmods.dev/badge/skills/idjohnson/aiskills/ste100.svg" alt="Measured on agentmods" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,868 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00065 $0.01868
Opus 5 $0.00032 $0.00934
Sonnet 5 $0.00013 $0.00374
Haiku 4.5 $0.00006 $0.00187

Measured 5d ago against content hash f57246f718e1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

ste100 scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/dictionary_lookup.py, scripts/ste_checker.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/ste100/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ASD-STE100 Issue 9 (Simplified Technical English) AI Skill

This skill equips AI assistants with the complete ASD-STE100 Issue 9 (January 2025) specification for preparing technical documentation in controlled English.

Overview & Core Principles

ASD-STE100 Simplified Technical English (STE) is an international standard designed to make technical manuals clear, easy to read, unambiguous, and simple to translate.

Key ASD-STE100 Rules Summary

  1. Vocabulary (Section 1): Use approved STE dictionary words strictly as their designated Part of Speech and approved meaning. Use Technical Nouns (TN) and Technical Verbs (TV) only from approved categories.
  2. Noun Clusters (Section 2): Limit multi-word noun clusters to a maximum of 3 words unless it is an official registered technical name.
  3. Verb Forms (Section 3): Use only simple tenses (Present Simple active, Past Simple active, Future Simple with "will", Imperative, Past Participle as adjective). NO passive voice in procedural writing. NO present continuous (-ing gerunds) except as approved TN/modifiers. NO complex modal auxiliaries (avoid should, could, may, might, shall).
  4. Sentence Limits (Section 4, 5, 6):
    • Procedural text: Maximum 20 words per sentence. One instruction per sentence (unless simultaneous).
    • Descriptive text: Maximum 25 words per sentence. Maximum 6 sentences per paragraph. Maximum 1 topic per paragraph.
    • No omitted words or contractions: Always include articles (the, a, an) and demonstrative adjectives (this, these). Never use contractions (don't, can't).
  5. Procedural Writing (Section 5): Start procedural instructions with imperative (command) verbs. Place conditional clauses (If..., When...) at the beginning of the instruction.
  6. Safety Instructions (Section 7): Use signal words WARNING (risk of personal injury/death), CAUTION (risk of equipment damage), or NOTE (information only). Always state safety warnings BEFORE the step to which they apply.
  7. Punctuation & Word Count (Section 8): Standard English punctuation is permitted EXCEPT the semicolon (;). Hyphenated words count as one word. Text in parentheses counts as one word in the sentence word count.
  8. Writing Practices (Section 9): Eliminate phrasal verbs (carry out, put off, take off). Rewrite using approved simple verbs (do, delay, remove).

Read the full file on GitHub · 114 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 114 lines · 65 tokens per session scan A f57246f718e1

Subscribe to this mod's changes

ste100 is a skill published in the GitHub repository idjohnson/aiskills (2 stars, last pushed 1mo ago), licensed MIT. It adds 65 tokens to every session and 1,868 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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